* [dpdk-stable] [PATCH v2 1/8] net/bonding: fix buf corruption in packets
[not found] ` <1535718368-15803-1-git-send-email-amo@semihalf.com>
@ 2018-08-31 12:25 ` Andrzej Ostruszka
2018-08-31 12:33 ` Andrzej Ostruszka
0 siblings, 1 reply; 2+ messages in thread
From: Andrzej Ostruszka @ 2018-08-31 12:25 UTC (permalink / raw)
To: dev; +Cc: mw, zr, tdu, nsamsono, Jia Yu, stable
From: Jia Yu <jyu@vmware.com>
When bond slave devices cannot transmit all packets in bufs array,
tx_burst callback shall merge the un-transmitted packets back to
bufs array. Recent merge logic introduced a bug which causes
invalid mbuf addresses being written to bufs array.
When caller frees the un-transmitted packets, due to invalid addresses,
application will crash.
The fix is avoid shifting mbufs, and directly write un-transmitted
packets back to bufs array.
Fixes: 09150784a776 ("net/bonding: burst mode hash calculation")
Cc: stable@dpdk.org
Signed-off-by: Jia Yu <jyu@vmware.com>
Acked-by: Chas Williams <chas3@att.com>
---
drivers/net/bonding/rte_eth_bond_pmd.c | 116 +++++++--------------------------
1 file changed, 23 insertions(+), 93 deletions(-)
diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index 4417422..b84f322 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -301,10 +301,10 @@ bond_ethdev_tx_burst_8023ad_fast_queue(void *queue, struct rte_mbuf **bufs,
/* Mapping array generated by hash function to map mbufs to slaves */
uint16_t bufs_slave_port_idxs[RTE_MAX_ETHPORTS] = { 0 };
- uint16_t slave_tx_count, slave_tx_fail_count[RTE_MAX_ETHPORTS] = { 0 };
+ uint16_t slave_tx_count;
uint16_t total_tx_count = 0, total_tx_fail_count = 0;
- uint16_t i, j;
+ uint16_t i;
if (unlikely(nb_bufs == 0))
return 0;
@@ -359,34 +359,12 @@ bond_ethdev_tx_burst_8023ad_fast_queue(void *queue, struct rte_mbuf **bufs,
/* If tx burst fails move packets to end of bufs */
if (unlikely(slave_tx_count < slave_nb_bufs[i])) {
- slave_tx_fail_count[i] = slave_nb_bufs[i] -
+ int slave_tx_fail_count = slave_nb_bufs[i] -
slave_tx_count;
- total_tx_fail_count += slave_tx_fail_count[i];
-
- /*
- * Shift bufs to beginning of array to allow reordering
- * later
- */
- for (j = 0; j < slave_tx_fail_count[i]; j++) {
- slave_bufs[i][j] =
- slave_bufs[i][(slave_tx_count - 1) + j];
- }
- }
- }
-
- /*
- * If there are tx burst failures we move packets to end of bufs to
- * preserve expected PMD behaviour of all failed transmitted being
- * at the end of the input mbuf array
- */
- if (unlikely(total_tx_fail_count > 0)) {
- int bufs_idx = nb_bufs - total_tx_fail_count - 1;
-
- for (i = 0; i < slave_count; i++) {
- if (slave_tx_fail_count[i] > 0) {
- for (j = 0; j < slave_tx_fail_count[i]; j++)
- bufs[bufs_idx++] = slave_bufs[i][j];
- }
+ total_tx_fail_count += slave_tx_fail_count;
+ memcpy(&bufs[nb_bufs - total_tx_fail_count],
+ &slave_bufs[i][slave_tx_count],
+ slave_tx_fail_count * sizeof(bufs[0]));
}
}
@@ -716,8 +694,8 @@ bond_ethdev_tx_burst_round_robin(void *queue, struct rte_mbuf **bufs,
tx_fail_total += tx_fail_slave;
memcpy(&bufs[nb_pkts - tx_fail_total],
- &slave_bufs[i][num_tx_slave],
- tx_fail_slave * sizeof(bufs[0]));
+ &slave_bufs[i][num_tx_slave],
+ tx_fail_slave * sizeof(bufs[0]));
}
num_tx_total += num_tx_slave;
}
@@ -1222,10 +1200,10 @@ bond_ethdev_tx_burst_balance(void *queue, struct rte_mbuf **bufs,
/* Mapping array generated by hash function to map mbufs to slaves */
uint16_t bufs_slave_port_idxs[nb_bufs];
- uint16_t slave_tx_count, slave_tx_fail_count[RTE_MAX_ETHPORTS] = { 0 };
+ uint16_t slave_tx_count;
uint16_t total_tx_count = 0, total_tx_fail_count = 0;
- uint16_t i, j;
+ uint16_t i;
if (unlikely(nb_bufs == 0))
return 0;
@@ -1266,34 +1244,12 @@ bond_ethdev_tx_burst_balance(void *queue, struct rte_mbuf **bufs,
/* If tx burst fails move packets to end of bufs */
if (unlikely(slave_tx_count < slave_nb_bufs[i])) {
- slave_tx_fail_count[i] = slave_nb_bufs[i] -
+ int slave_tx_fail_count = slave_nb_bufs[i] -
slave_tx_count;
- total_tx_fail_count += slave_tx_fail_count[i];
-
- /*
- * Shift bufs to beginning of array to allow reordering
- * later
- */
- for (j = 0; j < slave_tx_fail_count[i]; j++) {
- slave_bufs[i][j] =
- slave_bufs[i][(slave_tx_count - 1) + j];
- }
- }
- }
-
- /*
- * If there are tx burst failures we move packets to end of bufs to
- * preserve expected PMD behaviour of all failed transmitted being
- * at the end of the input mbuf array
- */
- if (unlikely(total_tx_fail_count > 0)) {
- int bufs_idx = nb_bufs - total_tx_fail_count - 1;
-
- for (i = 0; i < slave_count; i++) {
- if (slave_tx_fail_count[i] > 0) {
- for (j = 0; j < slave_tx_fail_count[i]; j++)
- bufs[bufs_idx++] = slave_bufs[i][j];
- }
+ total_tx_fail_count += slave_tx_fail_count;
+ memcpy(&bufs[nb_bufs - total_tx_fail_count],
+ &slave_bufs[i][slave_tx_count],
+ slave_tx_fail_count * sizeof(bufs[0]));
}
}
@@ -1320,10 +1276,10 @@ bond_ethdev_tx_burst_8023ad(void *queue, struct rte_mbuf **bufs,
/* Mapping array generated by hash function to map mbufs to slaves */
uint16_t bufs_slave_port_idxs[RTE_MAX_ETHPORTS] = { 0 };
- uint16_t slave_tx_count, slave_tx_fail_count[RTE_MAX_ETHPORTS] = { 0 };
+ uint16_t slave_tx_count;
uint16_t total_tx_count = 0, total_tx_fail_count = 0;
- uint16_t i, j;
+ uint16_t i;
if (unlikely(nb_bufs == 0))
return 0;
@@ -1381,39 +1337,13 @@ bond_ethdev_tx_burst_8023ad(void *queue, struct rte_mbuf **bufs,
/* If tx burst fails move packets to end of bufs */
if (unlikely(slave_tx_count < slave_nb_bufs[i])) {
- slave_tx_fail_count[i] = slave_nb_bufs[i] -
+ int slave_tx_fail_count = slave_nb_bufs[i] -
slave_tx_count;
- total_tx_fail_count += slave_tx_fail_count[i];
-
- /*
- * Shift bufs to beginning of array to allow
- * reordering later
- */
- for (j = 0; j < slave_tx_fail_count[i]; j++)
- slave_bufs[i][j] =
- slave_bufs[i]
- [(slave_tx_count - 1)
- + j];
- }
- }
+ total_tx_fail_count += slave_tx_fail_count;
- /*
- * If there are tx burst failures we move packets to end of
- * bufs to preserve expected PMD behaviour of all failed
- * transmitted being at the end of the input mbuf array
- */
- if (unlikely(total_tx_fail_count > 0)) {
- int bufs_idx = nb_bufs - total_tx_fail_count - 1;
-
- for (i = 0; i < slave_count; i++) {
- if (slave_tx_fail_count[i] > 0) {
- for (j = 0;
- j < slave_tx_fail_count[i];
- j++) {
- bufs[bufs_idx++] =
- slave_bufs[i][j];
- }
- }
+ memcpy(&bufs[nb_bufs - total_tx_fail_count],
+ &slave_bufs[i][slave_tx_count],
+ slave_tx_fail_count * sizeof(bufs[0]));
}
}
}
--
2.7.4
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